Seating chart - help

Hey! We are 10 days out and my seating chart was pretty much all set numerous times and now with people dropping out last minute and other things I’ve had to rework it. And I’m slowly losing my mind haha
Looking for advice - we have each set of parents at their own head tables w those sides of the family (fiancé’s parents were never married) so we have 3 table,ms, my parents who are sitting w my grandmother and aunts, his moms side sitting w those grandparents and aunts and his dads side sitting with their respective grandparents and aunts.. now, his dad side has 3 cousins who are our age and we put at a table close to his dads head table w our friends in the bridal party and it’s worked out. His mom invited a 2 close fam friends and one coworker who is close to family friends as well as great aunts and uncles and a few of her cousins. Rsvps come back and it’s just fiancé’s step dads aunts and uncles and family friend and one cousin from his moms side and her friends, so I placed the aunts and uncles together and her friends together for 2 tables of 6…. Now her cousin is saying w traveling and what not they may not make it out, which would leave it as a table of 4 and a table of 6. So should I just lump mil friends and fam friends w fils aunts and make it a table of 10 (which is totally going to mess w the placement number but I can do it- would also leaves grooms mom and step dad side together even tho it’s different age groups and they aren’t super close with one another) or do I move some of my side or our friends to mil fam friend table? Idk what to do. I thought about moving some people from my moms friend table and our friends or my cousins with theirs but my mom is stuck that you don’t mix family sides at the reception, it would make my cousins and her people feel weird??? Idk the etiquette so I’m just trying to decide on something. I could also move two couples of our friends to their table too.. if you’ve read this far thanks for your consideration and advice!